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DNA-FISH Probes - Biotech, Pharma and Life Science Channel

06:59 EST 23rd February 2017 | BioPortfolio

Fluorescent in situ hybridization (FISH) is a sensitive and accurate technique that allows the detection of chromosome aberrations. In this method, a single-stranded fluorescent-labeled nucleic acid sequence (probe) complementary to a target genomic sequence is hybridized to metaphase chromosomes and interphase nuclei to detect the presence and absence of a given abnormality. FISH complements traditional cytogenetic karyotype analysis.  The chief advantage of FISH is that is can be applied to non-dividing cells and a variety of specimen types.  FISH is a method of choice for diagnosis, prognosis, treatment response, and minimal residual disease detection in hematopoietic neoplasms (leukemia, lymphomas, multiple myeloma, and myelodysplasia) and solid tumors (breast cancer, non-small cell lung cancer, colorectal cancer, and cervical cancer).

Source: http://cancergenetics.com/cgi-research/dna-fish-probes/

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Medical and Biotech [MESH] Definitions

A type of IN SITU HYBRIDIZATION in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei.

The simultaneous identification of all chromosomes from a cell by fluorescence in situ hybridization (IN SITU HYBRIDIZATION, FLUORESCENCE) with chromosome-specific florescent probes that are discerned by their different emission spectra.

A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or bacterial cells through the use of specific nucleic acid-labeled probes.

Fish of the genera ONCORHYNCHUS and Salmo in the family SALMONIDAE. They are anadromous game fish, frequenting the coastal waters of both the North Atlantic and Pacific. They are known for their gameness as a sport fish and for the quality of their flesh as a table fish. (Webster, 3d ed).

A technique that labels specific sequences in whole chromosomes by in situ DNA chain elongation or PCR (polymerase chain reaction).

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